T27.3XXA — Burn of respiratory tract, part unspecified, initial encounter
Is T27.3XXA billable?
Yes, but T27.3XXA is an unspecified code. T27.3XXA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T27.3XXA is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T27.3XXA — the more specific alternatives are listed below.
More specific alternatives
- T27.0XXABurn of larynx and trachea, initial encounter
- T27.1XXABurn involving larynx and trachea with lung, initial encounter
- T27.2XXABurn of other parts of respiratory tract, initial encounter
- T27.4XXACorrosion of larynx and trachea, initial encounter
- T27.5XXACorrosion involving larynx and trachea with lung, initial encounter
- T27.6XXACorrosion of other parts of respiratory tract, initial encounter
T27.3XXA at a glance
| Code | T27.3XXA |
|---|---|
| Description | Burn of respiratory tract, part unspecified, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in T27.3XXA?
In T27.3XXA, the 7th character A means initial encounter. The 7th character is required for T27.3XXA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T27.3XXA group to?
T27.3XXA sits in MDC 04 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 205Other Respiratory System Diagnoses with MCCmedical
- 206Other Respiratory System Diagnoses without MCCmedical
As a secondary diagnosis, T27.3XXA is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG. It also carries Hospital-Acquired Condition category 05.
How is T27.3XXA listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T27.3, the nearest indexed parent of T27.3XXA. Use them to find the family, then select the specific code.
- Burn › respiratory tract (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)
- Inhalation › flame
Use additional code — inherited from Chapter 19
Report an additional code alongside T27.3XXA to fully describe the condition. T27.3XXA is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T27
Report an additional code alongside T27.3XXA to fully describe the condition. T27.3XXA is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T27.3XXA, but a patient may have both at the same time. When documentation supports it, T27.3XXA and the excluded code may both be reported.
How long has T27.3XXA existed?
T27.3XXA has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.